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1

signal

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noun sig·nal \ˈsig-nəl\

Simple Definition of signal

  • : an event or act which shows that something exists or that gives information about something

  • : something (such as a sound, a movement of part of the body, or an object) that gives information about something or that tells someone to do something

  • : a piece of equipment with colored lights that is used on railways and roads to tell people when to go, to slow down, or to stop

Source: Merriam-Webster's Learner's Dictionary

Full Definition of signal

  1. 1 :  sign, indication

  2. 2a :  an act, event, or watchword that has been agreed on as the occasion of concerted actionb :  something that incites to action

  3. 3 :  something (as a sound, gesture, or object) that conveys notice or warning

  4. 4a :  an object used to transmit or convey information beyond the range of human voiceb :  the sound or image conveyed in telegraphy, telephony, radio, radar, or televisionc :  a detectable physical quantity or impulse (as a voltage, current, or magnetic field strength) by which messages or information can be transmitted

Examples of signal in a sentence

  1. He likes her but he is sending the wrong signals with his constant teasing.

  2. The teacher gave us the signal to finish what we were working on and hand in our tests.

  3. Faulty wiring in the train station caused a signal to malfunction.



Origin and Etymology of signal

Middle English, from Medieval Latin signale, from Late Latin, neuter of signalis of a sign, from Latin signum


First Known Use: 14th century


2

signal

verb sig·nal

Simple Definition of signal

  • : to be a sign of (something) : to show the existence of (something)

  • : to make a sound or motion that tells someone something

Source: Merriam-Webster's Learner's Dictionary

Full Definition of signal

signaled

or

signalled

signaling

or

signalling

play \-nə-liŋ\
  1. transitive verb
  2. 1 :  to notify by a signal <signal the fleet to turn back>

  3. 2a :  to communicate or indicate by or as if by signals <signaled the end of an era>b :  to constitute a characteristic feature of (a meaningful linguistic form)

  4. intransitive verb
  5. :  to make or send a signal

signaler

or

signaller

noun

Examples of signal in a sentence

  1. Robins signal the arrival of spring.

  2. The election results surely signal the start of a new era.

  3. A lock on the suitcase might signal that there's something of value inside.

  4. Did he signal before he made the left turn?

  5. They signaled at me to come over to their table.

  6. He signaled us that it was time to begin the meeting.

  7. The umpire signaled a strike.



1805

First Known Use of signal

1805


3

signal

adjective sig·nal

Simple Definition of signal

  • : very important or great

Source: Merriam-Webster's Learner's Dictionary

Full Definition of signal

  1. :  distinguished from the ordinary :  notable <a signal achievement>

Examples of signal in a sentence

  1. Is he worthy of such a signal honor?

  2. <the Louisiana Purchase is cited by many historians as one of the most signal events in American history>



Origin and Etymology of signal

modification of French signalé, past participle of signaler to distinguish, from Old Italian segnalare to signal, distinguish, from segnale signal, from Medieval Latin signale


First Known Use: 1627



SIGNAL Defined for Kids

1

signal

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noun sig·nal \ˈsig-nəl\

Definition of signal for Students

  1. 1 :  a sign, event, or word that serves to start some action <… the manager gave the signal for the curtain to go down, and the audience … cheered. — Richard and Florence Atwater, Mr. Popper's Penguins>

  2. 2 :  a sound, a movement of part of the body, or an object that gives warning or a command <The police officer made a signal with his hand.> <a traffic signal>

  3. 3 :  a radio wave that transmits a message or effect (as in radio or television)



Word Root of signal

The Latin word signum, meaning “mark” or “indication,” gives us the root sign. Words from the Latin signum have something to do with marks, signs, or indications. A sign is a move of the hand that indicates something to others. To designate is to mark someone or something for a special purpose. A signal is an indication that an action should begin.


2

signal

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verb sig·nal

Definition of signal for Students

signaled

or

signalled

signaling

or

signalling

  1. 1 :  to notify by a motion, action, movement, or sound

  2. 2 :  to communicate with motions, actions, movements, or sounds




3

signal

play
adjective sig·nal

Definition of signal for Students

  1. 1 :  unusually great <a signal honor>

  2. 2 :  used for sending a message, warning, or command <a signal light>





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